Abstract
This laboratory rainfall simulation study investigates the effects of soil properties, slope steepness, and cover density on rainfall erosion potential of 153 soil samples collected in Southern Alberta, Canada. Simulated rainfall amount was held constant for these tests Of all the factors examined, simulated vegetative cover was found to be most significant. When cover was held constant, soil aggregate stability is the best predictor of variations of soil erodibility. Organic carbon content, texture and runoff amount (infiltration capacity) are other significant variables Slope was found to be significantly related to wash loss but not splash loss Two factors were proposed to explain the lack of relationship between splash loss and slope: (a) the proportion of splashed particles collected outside the sample plan may vary with the size of the pan; (b) soil transportability by splash increases only slightly with slope angle and therefore splash loss is only marginally related to slope steepness
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